T-TT-0694-22
Service Bulletin Details
Public Details for: T-TT-0694-22
Tt: after jump-starting, the vehicle may experience a no-start condition and multiple dtcs including U010087. Upon investigation, it is found that the engine ecu has been damaged and needs to be replaced. In several cases, it was found that
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Tech Tip T-TT-0694-22 May 18, 2023 Subject Market DTC U010087 & No Start/ Replaced Engine ECU After Jump Starting USA Service Category Section Engine/Hybrid System Engine Control Applicability A25A-FXS APPLICABLE VEHICLES 2019-2022 2020-2023 2023-2024 2021-2024 Avalon HV Highlander HV RAV4 HV Sienna HV 2021-2024 2023-2024 2020-2024 Venza HV RAV4 Prime Camry HV CONDITION After jump-starting, the vehicle may experience a no-start condition and multiple DTCs including U010087. Upon investigation, it is found that the engine ECU has been damaged and needs to be replaced (Fig 1). In several cases, it was found that the cause of the ECU damage was improper jump starting. Further investigation found that ECU damage may occur if the jumper cables are hooked up on or around the engine ECU or ECU mounting bracket (Fig 2). RECOMMENDATIONS To prevent this condition from occurring, it is recommended that the jumper cables be attached as described in the owner’s manual. Below is an example of the correct jump start locations for 22 MY Highlander HV (Fig 3). Please consult the appropriate owners or repair manual to confirm the correct jump start location on other models. LINK REFERENCES This Tech Tip does not contain any link references Expires on Ver. 4.0 01/01/2022 T 05/18/2024 Rev1 © 2022, Toyota Motor Sales, USA Page 1 of 1